tests: don't symbolize root uid / gid in extfs tests (if run as root)

Signed-off-by: Yury V. Zaytsev <[email protected]>

tests/src/vfs/extfs/helpers-list/mc_parse_ls_l.c

@@ -161,15 +161,17 @@ my_itoa (int i)
 static const char *
 symbolic_uid (uid_t uid)
 {
-    return (opt_symbolic_ids && uid == getuid ())? "<<uid>>" : my_itoa ((int) uid);
+    const uid_t user_uid = getuid();
+    return (opt_symbolic_ids && uid == user_uid && user_uid != 0)? "<<uid>>" : my_itoa ((int) uid);
 }
 
 /* --------------------------------------------------------------------------------------------- */
 
 static const char *
 symbolic_gid (gid_t gid)
 {
-    return (opt_symbolic_ids && gid == getgid ())? "<<gid>>" : my_itoa ((int) gid);
+    const gid_t user_gid = getgid ();
+    return (opt_symbolic_ids && gid == user_gid && user_gid != 0)? "<<gid>>" : my_itoa ((int) gid);
 }
 
 /* --------------------------------------------------------------------------------------------- */